package collection;

import java.util.ArrayList;
import java.util.List;

// List subList(int start ,int end):含头不含尾
public class SubListDemo {
    public static void main(String[] args) {
        List<Integer> list =new ArrayList<>();
        for (int i = 0; i <10 ; i++) {
            list.add(i*10);
        }
        System.out.println("list:"+list);


        List<Integer> subList =list.subList(3,8);  //获取3-7的子集
        System.out.println("subList:"+subList);

        for (int i = 0; i <subList.size() ; i++) {
            subList.set(i,subList.get(i)*10);
        }
        System.out.println("subList:"+subList);
        System.out.println("list:"+list);//对子集的操作就是对原文件的操作

        list.set(3,50);
        System.out.println(subList);


        list.remove(0);
        System.out.println("list:"+list);//原集合修改后,子集不能在进行任何操作了,操作则发生异常,但是可以重新获取子集
        //System.out.println("subList:"+subList);  //运行时发生不支持修改异常



    }
}
